src: remove --experimental-worker env option

[HarshithaKP]

worker is stable in the master, the flag is
no more required.

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

[HarshithaKP]

One failure in test/parallel/test-worker-fs-stat-watcher.js which will be fixed through PR #31563

[richardlau]

workers are still experimental in 10.x and requires the flag there. #25361 made the flag a no-op rather than removing it. Not having the flag in master means that scripts that pass --experimental-worker to node would work on Node.js 10 but break on a version of Node.js where the flag has been removed.

I'd prefer to keep the flag as a no-op until 10.x becomes End-of-Life.

[richardlau]

or @addaleax would we consider taking workers out of experimental for 10.x before it goes into maintenance in April?

[addaleax]

I'd prefer to keep the flag as a no-op until 10.x becomes End-of-Life.

I’d prefer to keep the flag indefinitely. There’s no reason not to.

or @addaleax would we consider taking workers out of experimental for 10.x before it goes into maintenance in April?

I, personally, don’t have any plans to do so (and, admittedly, no overview over what changes would have to be backported to v10.x for this to happen), so I’m guessing not? @nodejs/workers

[addaleax]

Making my -1 explicit